/* 公共导航：统一各页面的品牌、菜单和移动端样式。 */
:root { --site-header-height: 132px; scroll-padding-top: calc(var(--site-header-height) + 20px); }
:root .site-header[data-component] {
  --header-ink: #1e1b16; --header-muted: #6f6250; --header-line: #e5e0d5;
  --header-brass: #a08654; --header-glass: #f3f0e9;
  position: sticky; inset: 0 0 auto; z-index: 40; color: var(--header-ink);
  background: #fdfcf9; border-bottom: 1px solid #e7e2d8;
  box-shadow: none; font-family: var(--font-latin, "DM Sans"), "Noto Sans SC", sans-serif;
}
:root .site-header[data-component]::after {
  content: none;
}
:root .site-header[data-component] *, :root .site-header[data-component] *::before, :root .site-header[data-component] *::after { box-sizing: border-box; }
:root .site-header[data-component] .site-topline { background: #f3f1ea; color: #6f6250; border: 0; font-size: 12px; font-weight: 500; line-height: 1.4; letter-spacing: 0; }
:root .site-header[data-component] .site-topline__inner { width: min(100%,1480px); min-height: 36px; padding: 5px 32px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
:root .site-header[data-component] .site-topline__contacts { display: flex; align-items: center; gap: 24px; min-width: 0; }
:root .site-header[data-component] .site-topline__item { display: inline-flex; align-items: center; gap: 8px; min-width: 0; color: inherit; text-decoration: none; }
:root .site-header[data-component] .site-topline__item span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
:root .site-header[data-component] .site-topline__item svg { width: 14px; height: 14px; flex-shrink: 0; color: #8a7f6d; }
:root .site-header[data-component] .site-topline__social { display: flex; gap: 6px; margin: 0; flex-shrink: 0; }
:root .site-header[data-component] .site-topline__social-link { display: grid; place-items: center; width: 26px; height: 26px; border: 0; border-radius: 50%; color: #6f6250; background: transparent; }
:root .site-header[data-component] .site-topline__social-link svg { width: 14px; height: 14px; }
:root .site-header[data-component] [hidden] { display: none !important; }
:root .site-header[data-component] .site-header__inner { position: relative; display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; width: min(100%,1480px); min-height: 92px; margin: auto; padding: 16px 32px; gap: 28px; }
:root .site-header[data-component] .brand { display: flex; align-items: center; gap: 12px; margin: 0; padding: 0; border: 0; min-width: 0; color: #1e1b16; text-decoration: none; }
:root .site-header[data-component] .brand__mark { display: grid; place-items: center; flex: 0 0 48px; width: 48px; height: 48px; border: 0; background: transparent; overflow: hidden; }
:root .site-header[data-component] .brand__mark--image img { display: block; width: 168px; max-width: none; height: auto; margin: -36px 0 0 -60px; filter: none; }
@supports (object-view-box: inset(0%)) {
  :root .site-header[data-component] .brand__mark--image img { width: 100%; height: 100%; margin: 0; object-fit: contain; object-view-box: inset(20% 34% 57% 34%); }
}
:root .site-header[data-component] .brand__text { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
:root .site-header[data-component] .brand__pt { max-width: 170px; font-family: inherit; font-size: 20px; font-weight: 650; line-height: 1.05; letter-spacing: -.045em; text-transform: uppercase; text-shadow: none; white-space: normal; overflow: visible; }
:root .site-header[data-component] .brand__zh { display: block; margin: 0; font-family: inherit; font-size: 9px; line-height: 1.2; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: #8a7f6d; text-shadow: none; }
:root .site-header[data-component] .nav { display: flex; align-items: center; justify-content: center; gap: 4px; min-width: 0; font-family: inherit; font-size: 14px; font-weight: 500; letter-spacing: 0; text-shadow: none; }
:root .site-header[data-component] .nav a, :root .site-header[data-component] .nav-group summary { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 10px 14px; border-radius: 4px; color: #2e2a22; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background .18s,color .18s; }
:root .site-header[data-component] .nav a::after { content: none; }
:root .site-header[data-component] .nav a:hover, :root .site-header[data-component] .nav-group summary:hover { background: #f3f1ea; color: #1e1b16; }
:root .site-header[data-component] .nav > a[aria-current="page"], :root .site-header[data-component] .nav-group:has(a[aria-current="page"]) > summary { color: #1e1b16; background: transparent; box-shadow: inset 0 -2px #1e1b16; }
:root .site-header[data-component] .nav-group { position: relative; width: auto; }
:root .site-header[data-component] .nav-group summary { list-style: none; }
:root .site-header[data-component] .nav-group summary::-webkit-details-marker { display: none; }
:root .site-header[data-component] .nav-group summary::after { content: ""; width: 6px; height: 6px; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: translateY(-2px) rotate(45deg); transition: transform .18s; }
:root .site-header[data-component] .nav-group[open] > summary::after { transform: translateY(1px) rotate(225deg); }
:root .site-header[data-component] .nav-group__links { position: absolute; top: calc(100% + 12px); left: 0; z-index: 45; min-width: 230px; padding: 8px; margin: 0; border: 1px solid #e5e0d5; border-radius: 6px; background: #fdfcf9; box-shadow: 0 8px 24px #1e1b1610; }
:root .site-header[data-component] .nav-group:last-child .nav-group__links { right: 0; left: auto; }
:root .site-header[data-component] .nav-group__links a { display: flex; justify-content: flex-start; width: 100%; padding: 11px 14px; }
:root .site-header[data-component] .nav-group__links a[aria-current="page"] { color: #1e1b16; background: #f3f1ea; }
:root .site-header[data-component] .locale { position: static; display: inline-flex; align-items: center; justify-self: end; flex-shrink: 0; margin: 0; padding: 0 0 0 20px; border: 0; border-left: 1px solid #e5e0d5; }
:root .site-header[data-component] .locale__flag { display: inline-flex; width: 20px; flex: 0 0 20px; margin-right: 8px; }
:root .site-header[data-component] .locale__flag svg { display: block; width: 100%; height: auto; border-radius: 2px; }
:root .site-header[data-component] .locale__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
:root .site-header[data-component] .locale__select { appearance: none; min-width: 102px; width: auto; min-height: 44px; padding: 10px 28px 10px 10px; border: 1px solid #e5e0d5; border-radius: 4px; box-shadow: none; color: #2e2a22; background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath fill='none' stroke='%231e1b16' stroke-width='1.5' d='m1 1 4 4 4-4'/%3E%3C/svg%3E") no-repeat right 10px center; font-family: inherit; font-size: 13px; font-weight: 600; line-height: 1.2; letter-spacing: 0; cursor: pointer; }
:root .site-header[data-component] .locale__select option { background: #fff; color: #2e2a22; }
:root .site-header[data-component] [data-mobile-menu-slot] { display: none; }
:root .site-header[data-component] :is(a,summary,button,select):focus-visible { outline: 3px solid #a08654; outline-offset: 3px; }
/* 较窄桌面减少间距，低于折叠宽度时保留完整菜单文字。 */
@media (min-width:1101px) and (max-width:1320px) {
 :root .site-header[data-component] .site-header__inner { gap: 14px; padding-inline: 24px; }
 :root .site-header[data-component] .nav { gap: 0; font-size: 13px; }
 :root .site-header[data-component] .nav a, :root .site-header[data-component] .nav-group summary { padding-inline: 9px; }
 :root .site-header[data-component] .brand__pt { max-width: 135px; font-size: 18px; }
 :root .site-header[data-component] .locale { padding-left: 12px; }
}
@media (max-width:1100px) {
 :root { --site-header-height: 112px; }
 :root .site-header[data-component] .site-topline__inner { min-height: 32px; padding: 4px 20px; }
 :root .site-header[data-component] .site-header__inner { display: flex; min-height: 78px; padding: 14px 20px; gap: 12px; }
 :root .site-header[data-component] .brand { order: 1; }
 :root .site-header[data-component] .locale { order: 2; margin-left: auto; padding-left: 0; border: 0; }
 :root .site-header[data-component] [data-mobile-menu-slot] { display: contents; }
 :root .site-header[data-component] .menu-button { order: 3; display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; margin: 0; border: 1px solid #e5e0d5; border-radius: 4px; color: #1e1b16; background: #f3f1ea; cursor: pointer; }
 :root .site-header[data-component] .menu-button > span { position: relative; display: block; width: 18px; height: 2px; font-size: 0; background: currentColor; }
 :root .site-header[data-component] .menu-button > span::before, :root .site-header[data-component] .menu-button > span::after { content: ""; position: absolute; inset: 0; background: currentColor; transition: transform .2s; }
 :root .site-header[data-component] .menu-button > span::before { transform: translateY(-6px); }
 :root .site-header[data-component] .menu-button > span::after { transform: translateY(6px); }
 :root .site-header[data-component].is-open .menu-button > span { background: transparent; }
 :root .site-header[data-component].is-open .menu-button > span::before { transform: rotate(45deg); }
 :root .site-header[data-component].is-open .menu-button > span::after { transform: rotate(-45deg); }
 :root .site-header[data-component] .nav { position: absolute; inset: 100% 12px auto; display: flex; flex-direction: column; align-items: stretch; gap: 4px; max-height: calc(100dvh - 130px); overflow-y: auto; padding: 12px; border: 1px solid #e5e0d5; border-radius: 6px; background: #fdfcf9; box-shadow: 0 8px 24px #1e1b1610; visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(-6px); font-size: 15px; transition: opacity .18s,transform .18s,visibility .18s; overscroll-behavior: contain; }
 :root .site-header[data-component].is-open .nav { visibility: visible; opacity: 1; pointer-events: auto; transform: none; }
 :root .site-header[data-component] .nav-group { width: 100%; }
 :root .site-header[data-component] .nav > a, :root .site-header[data-component] .nav-group summary { justify-content: space-between; width: 100%; min-height: 48px; padding: 12px 16px; }
 :root .site-header[data-component] .nav-group__links { position: static; min-width: 0; margin: 6px 0 6px 14px; padding: 4px; box-shadow: none; border: 0; border-left: 2px solid #d9d1c2; border-radius: 0; background: transparent; }
}
@media (max-width:600px) {
 :root .site-header[data-component] .site-topline__inner { padding-inline: 16px; }
 :root .site-header[data-component] .site-topline__contacts { flex: 1; }
 :root .site-header[data-component] .site-topline__item:nth-child(2), :root .site-header[data-component] .site-topline__social { display: none; }
 :root .site-header[data-component] .site-topline__item span { max-width: 85vw; }
 :root .site-header[data-component] .site-header__inner { gap: 8px; padding-inline: max(12px,env(safe-area-inset-left)); }
 :root .site-header[data-component] .brand { gap: 8px; }
 :root .site-header[data-component] .brand__mark { flex-basis: 36px; width: 36px; height: 36px; }
 :root .site-header[data-component] .brand__pt { max-width: 114px; font-size: 16px; }
 :root .site-header[data-component] .brand__zh { font-size: 8px; letter-spacing: .12em; }
 :root .site-header[data-component] .locale__flag { display: none; }
 :root .site-header[data-component] .locale__select { min-width: 84px; max-width: 108px; padding-left: 8px; font-size: 12px; }
}
@media (max-width:360px) { :root .site-header[data-component] .brand__mark { flex-basis: 28px; width: 28px; height: 30px; } :root .site-header[data-component] .brand__pt { max-width: 90px; font-size: 14px; } }
@media (prefers-reduced-motion:reduce) { :root .site-header[data-component] *, :root .site-header[data-component] *::before, :root .site-header[data-component] *::after { transition: none !important; } }